Underframe



Sept. 6, 1932. F. w. HAHN ET AL UNDERFRAME 3 Sheets-Sheet l Filed March10, 1.9.'50

Sept 6L 1932- F. w. HAHN ET AL Y1,875,553?

UNDERFRAME Filed March 10, 1930 5 Sheets-Sheet `2 www SePL 6, 1932 F. w.HAHN ET AL 1,875,592

UNDERFRAME Filedv march 1o. 1930 s sheets-sheet s Patented Sept. 6, 1932UNITED STATES FERDINAND nArN, or' MICGAN CITY, iiiiNA, Aitfr Joint (A.Livoit'ji, or*-y smear orifice CHICAGO, ILLINos, Assievons, BY i'xvrnsunAssreuirnurs, @cenni-inrit srnnr. casas. INGs CORPORATION, ornnnrsioivn, PnNNsiLvANI'A, A conPoRA'rroN or DELA- WARE ISERFRAMEApplication mea March 1o, 1930. Senn No. 434,510.

The invention relates to railroad rolling stock, and consists in animproved construc-V underframe for association with cars of the abovetype which will employ asa substitute for the center sills a singlemember so shaped as to utilize the space defined by the usual .verticalmembers of the center sill.

Another Objectis to provide an underframe for tank cars employing a castone piece member which will Vconstitute the bottom plate of the tankandalso form a substitute for the usual spaced center sills.

Yet another object isto provide an under frame for tank cars employing acast one piece member forming the bottom plate of the' tank which willbe so shaped as to increase the space available for carrying thecontents.

A further object is to provide an underframe for tank cars which willserve to inV erence characters are used to designate like parts Figure 1is a top plan view of the undern frame of the presentv inventionyshowing' the one piece longitudinal member secured tot'h'e bolster andthe end frame; Y

Figure 2 is a side elevation of the same, parts being shown in crosssection; u

Figure 3 is an end elevation of the'same; Figure 4L is a fragmentaryside elevationofa portion of the underframe structure show-' ing thefluid outlet and steam inlet ports Figure 5 is a crossY sectional viewtakenk substantially along line 5-5 of Figure 1, and

showin g the draft gear retaining sills; i

` Figure 6 isla cross sectional view' taken sab`` stantially along line6'-6 of Figure 1;

Figure 7 is ai cross sectional view taken substantially along line 7`7of Figure 1;'

Figure' 8 is aA cross sectional View alongf line 8-8 of `Figure 4.

The improved under frame form-ing the supporting structure for tankYcars comprises the usual end sillv member 10 having integral sidemembers 11 braced by integral braces 12,

the side members being connected to a transverselyextenfdin'g bolstermember 13; This end struct-ure is also braced by corner braces 14 andhas cast integral therewithV striking blocks 15, a carrier iron 16 andpushpol'e pockets 17. vThe bolster 13 is formed as an integral part of acentrally disposed longitudinal member 2O having a bottom portion 21 andvertical side Walls 22, which member eX- tends from end to end of thecar and forms the bottom plate of the tank car and also serves as asubstitute for the usual center sills.- The member is subjected to auniformly disftributed hydrostatic pressure due to the fluid contents ofthe tank, and is therefore braced the bolster member, and the usualdraftl sills, .the latter being designated 18. The bolster 13, inadditionto the vertical: wallA 23, is provided W'ith'a similar Wall 25spaced therefrom and extending the full length ofthe member.A It is tobev understood that the construction" above described and'illustrated inFigure 1 forms the end structure of the ,underframe andisduplicatedjat,bothends of the car. It

is seen then, that the Well portion ofthe member 20 is defined at eitherend bythe walls 23j `of the bolster and themember continued'over.

the bolsterby the bottom Walls 24. y

The bottom wall 21 of the longitudinal member has cast integraltherewith the brake supporting parts designated as 26, 27 and 28, and isalso provided with a draining 'opening 30 which consists of a separatemember 31 threaded as desired and welded in place within an openingprovided for the purpose in the bottom member. A steam connection 32 issimilarly provided for introducing steam into the tank for heating thecontents, such as crude oil, to induce a more rapid flow in coldweather. The arrange* ment for providing cross-overs for the drain pipes33 comprises a channel-like compartment including walls 34 which arespaced in parallel arrangement with each other and are supported fromthe cross ties 19. Brackets 35 are provided at each end of the channelcompartment which serve` to secure the pipe 33 in position. It isunderstood that the construction need not be limited to this Jform ofcross-over, as the same may assume merely the form of a pipe extendingdiagonally of the cross ties-19 and integrallyT joined to the side Walls22 and provided with flanged ends for connection with the usual drainpipe.V

' `The longitudinally extending member 20 V has also integrally formedthereon on the outside of the walls 22 brackets designated 36 which arelocated at intervals between the bolster and vprovide the supportingmeans for thelongitudinally extending floor boards 37. F or this purposethe brackets 36 have riveted or otherwise secured to thema hori zontalbrace 38 and an upwardly extending brace 39.` The running'boards 37 arelocated on each side of the tank and are supported at their ends by thebolsteriand at intermediate points between by the braces 39. rIheniember'QOfprovides the bottom plate of the tank and is adapted to havethe re'- maining tank structure secured thereto. The end portions 40,`Figure 2, are secured by riveting or=othersuitablc means to a raisedpart il of the member 20 provided for the purpose. The side sheets l2are secured in a similar manner to the side portions of the Vmember 20.The construction, however, is

not limited merely to riveting the members together, as it is possibleto machine the y overlapping parts and weld the same, which would be inaddition to the rivets. It is also contemplated to extend the brackets36 upwardfbeyond the riveted oint, in which case the brackets would beriveted to the sideY sheets 42. This construction allows the brackets toassume some of the strain induced to be limited by the exact embodimentof the device shown, which ismerely by way of illustrationand `notlimitation, as various and other forms oi the device will of course Vbeapparent toV those skilled in the art' without departing from the spiritof the. invention or the scope of the claims.

We claim:

l. In a tank car, in combination with en d frames, bolsters securedthereto, a longitudinally disposed member joining said bolsters andintegral therewith, a well portion formed in said longitudinal member,said member forming the bottom portion of ay tank with remaining tankstructure secured thereto.

2. In a tank car, in combination with end frames, bolsters securedthereto, a longitudinally disposed member joining said bolsters andintegral therewith, a well portion formed in said longitudinal memberand extending the length between said bolsters, `and tank structuresecured thereto.

3. In a tank car, in combination with end frames, bolsters securedthereto, a longitudie nally disposed member joining said bolsters andintegral therewith, sai d member being formed with vertical walls and abottom wall, side walls extending the length of said member and joiningsaid vertical walls, and tank structure secured to said side walls,gwhereby the longitudinal memberforms the bottom oi said tank.

4. In a `tank car, in combination with end frames, bolsters securedthereto, a longitudinally disposed member joining said bolsters andintegral therewith, a well portion formed in said longitudinal memberbetween said bolsters, comprising vertical walls and a bottom wall, sidewallsextendingthe length of said member and oining said vertical walls,and tank structure secured to saidside walls, wherebythe longitudinalmember forms the bottom of said tank.V f

5. In anunderframe 'for tank cars, in con bination with tank structure,bolsters at each end thereoi, a longituinally disposed casting joiningsaid bolsters and integral therewith, said casting being formed with adepressed portion or well, and comprising the bottom the portion of saidcasting extending central- 115,..v

ly thereof and confined between the bolsters being depressed to form awell, the tank strucy ture. being securedto the sides oi said casting,whereby the casting forms the bottom plate. d y j 7. In an underframefor tank cars, in combination with tank structures, bolsters at each endthereof, a longitudinaily.disposed ycasting joining said bolsters andintegral therewith, said casting` being .formed with l vertical wallsand a bottom wall extending y the length between the bolsters andforming 1 part of the wall of the tank structure, whereby theverticalwalls function as center sills. p

i V8. In a railwayvehicle, an underframe yg,

Y casting forming a tank bottom member and having holsters integrallysecured thereto at each end, raised portions provided at the ends ofsaid casting, upwardly curved portions provided along the sides of saidcasting, the ends of the tank being secured to the raised portions andthe sides being secured to the curved portions.

10. In a railway vehicle, a one piece underframe casting having holstersformed integrally therewith, superstructure mounted thereon, saidunderframe casting being formed with curved sides and a depressedcentral porti-on functioning as center sills and forming the bottom of atank, the superstructure forming the sides and ends of said tank.

frame casting having holsters formed integrally therewith, said castingbeing formed with curved sides and a depressed central portion,Crossovers for drain pipes formed integral with the depressed portion,superstructure secured to the sides, said superstructure and saidcasting cooperating lto form a tank.

12. In an underframe for tank cars, in combination with tank structure,holsters at each end thereof formed of transversely extending spacedwalls, a longitudinally dis posed casting integrally joined to the lowerend of the inner wall of said holsters, said casting being formed with adepressed portion -or well extending centrally and between said innerwalls, whereby the vertical walls of the casting formed thereby comprisecenter sills and said inner walls comprise the end walls of said well.

13. In an underframe for tank cars, in

. combination with tank structure, holsters at each end thereof formedof transversely extending spaced walls, a longitudinally disposedcasting integrally joined tothe lower end of the inner wall 4of saidholsters, said casting being formed with a depressed portion or wellextending centrally and between said inner walls, said castingcontinuing over said holsters and formed with a raised portion, the endsof the tank being secured to said raised portion and the sides ot thetank being secured to the sides of the casting.

14. In a railwayvehicle underframe, holsters, and an arcuate webextending between said holsters and forming the lower portion 'of a tankand also forming the main longi- 11. In a railway vehicle, a one piece`under- Y tudinal element of theunderframe between said holsters.

' 15. In a tank car underframe, a holster of box shape cross section,the top wall of which bolster forms a part of the car tank bottomv andextends beyond the -outer vertical wall of said holster towards the endof the car and forms a suitable iange for mounting the lower endA of atank'end plate which is offset from said bolster. t i

' 16. In a tank car underframe, spacedV holsters, an arcuate webextending between said holsters and forming themain load carrying andforce transmitting member between said holsters, and draft sillsextending outwardly from said` holster with their inner ends mergingwith said web.

17. In .a railway vehicle underframe, spaced holsters, each having a topplate and a verticalwplate, aweh plate extending be tweenv said holstersand forming a concave recess'helowthe 4top of said holsters, asuhstantially horizontal plate extending outwardly from the top of eachbolster toward the ends of the underfram-e, all` of said plates beingsubstantially imperforate and forming the bottom of a tank. i

y 18.V In a railway vehicle. underframe, spaced holsters with top-walls,and an imperforate web plate extending between said holsters and, withsaidtop walls, forming the bottom of a tank, the'side edge portions ofsaid plate being located at substantially the same level `as said topwalls and the intermediate portion of said plate between said holstersforming a recess extending below the top of said holsters.

19. In a railway vehicle underframe, a pair of. holsters and animperforate weh adapted to form the bottom of a tank, each holster topwall forming at least a portion of each of the` weh'` end portions, theintermediate portion of said web between said holsters l forming arecess extending below the top of said holsters, and asurtace extendingaround the sides and ends of said web for mounting Y said web platebetween said holsters forming a recess extending below the tops of saidholsters.y

22. Avehicle underframecomprisingspaced holsters and a single ,web plateconstituting the sole member extending between said holsters.

.23. In a railway vehi-cle, a cylindrical tank structure comprising anunderframe and 5V superstructure, a portion of said underframeY having aweb plate with arcuate side portions of substantially the same contouras the low-er portions of said superstructure and secured thereto, saidweb plate, together with losaid superstructure, is adapted to transmitVall of the huiiing and pulling forces applied to said tank structure. YY y 24. A railway vehicleundertrame including a web plate extendinglongitudinally of 15 .the underframe and having an arcuate cross sectionand adapted to transmit all of the longitudinal forces applied totheunderframe. f Y A A 25.v In a railway vehicl underframe,

20 spaced holsters, each having a top -pl-ateand a vertical web plate, aweb plate extending between said holsters and forming a'concave f recessbelow the top of said holsters, all of said plates, being substantiallyimperforate 25 iand forming the bottom of' a tank. l' 26. In a railwayvehicle underframe, a pair of box shaped holsters having plate-like topmembers, draft sills extending outwardly Y from said holsters andYhaving plate-like tie 30 ,'members, a web plate extending between saidholsters, said holster and draft still members and web plate beingimperforat'e and adapted to form thebottomv of a tank, said bolster webplate extending from the bolster side 35.;Walls towards the end of theunderframe, and said Aextending portion merging with the tops of saiddraft sill members.

27. A railway vehicle underframe having a longitudinally extending webplate adaptedy .'Jto transmit all of the longitudinal forces applied tosaid'underframe. Signed at Chicago, Illinois, this .ith day of March,1930.V

FERDINAND W. HAHN. Y JOHN A. LAMONT.

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